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needforspeed: stringlib refactoring (in progress)

This commit is contained in:
Fredrik Lundh 2006-05-26 17:22:38 +00:00
parent 69bfaab304
commit b947948c61
3 changed files with 71 additions and 77 deletions
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50
Objects/stringlib/partition.h Normal file
View File

@ -0,0 +1,50 @@
/* stringlib: partition implementation */
#ifndef STRINGLIB_PARTITION_H
#define STRINGLIB_PARTITION_H
#include "stringlib/fastsearch.h"
Py_LOCAL(PyObject*)
partition(PyObject* str_obj, const STRINGLIB_CHAR* str, Py_ssize_t str_len,
PyObject* sep_obj, const STRINGLIB_CHAR* sep, Py_ssize_t sep_len)
{
PyObject* out;
Py_ssize_t pos;
if (sep_len == 0) {
PyErr_SetString(PyExc_ValueError, "empty separator");
return NULL;
}
out = PyTuple_New(3);
if (!out)
return NULL;
pos = fastsearch(str, str_len, sep, sep_len, FAST_SEARCH);
if (pos < 0) {
Py_INCREF(str_obj);
PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
Py_INCREF(STRINGLIB_EMPTY);
PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
Py_INCREF(STRINGLIB_EMPTY);
PyTuple_SET_ITEM(out, 2, (PyObject*) STRINGLIB_EMPTY);
return out;
}
PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, pos));
Py_INCREF(sep_obj);
PyTuple_SET_ITEM(out, 1, sep_obj);
pos += sep_len;
PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str + pos, str_len - pos));
if (PyErr_Occurred()) {
Py_DECREF(out);
return NULL;
}
return out;
}
#endif

39
Objects/stringobject.c
View File

@ -772,8 +772,11 @@ PyString_AsStringAndSize(register PyObject *obj,
#ifdef USE_FAST
#define STRINGLIB_CHAR char
#define STRINGLIB_NEW PyString_FromStringAndSize
#define STRINGLIB_EMPTY nullstring
#include "stringlib/fastsearch.h"
#include "stringlib/partition.h"
#endif
@ -1541,9 +1544,8 @@ found, returns S and two empty strings.");
static PyObject *
string_partition(PyStringObject *self, PyObject *sep_obj)
{
Py_ssize_t len = PyString_GET_SIZE(self), sep_len, pos;
Py_ssize_t str_len = PyString_GET_SIZE(self), sep_len;
const char *str = PyString_AS_STRING(self), *sep;
PyObject * out;
if (PyString_Check(sep_obj)) {
sep = PyString_AS_STRING(sep_obj);
@ -1556,38 +1558,7 @@ string_partition(PyStringObject *self, PyObject *sep_obj)
else if (PyObject_AsCharBuffer(sep_obj, &sep, &sep_len))
return NULL;
if (sep_len == 0) {
PyErr_SetString(PyExc_ValueError, "empty separator");
return NULL;
}
out = PyTuple_New(3);
if (!out)
return NULL;
pos = fastsearch(str, len, sep, sep_len, FAST_SEARCH);
if (pos < 0) {
Py_INCREF(self);
PyTuple_SET_ITEM(out, 0, (PyObject*) self);
Py_INCREF(nullstring);
PyTuple_SET_ITEM(out, 1, (PyObject*) nullstring);
Py_INCREF(nullstring);
PyTuple_SET_ITEM(out, 2, (PyObject*) nullstring);
} else {
PyObject* obj;
PyTuple_SET_ITEM(out, 0, PyString_FromStringAndSize(str, pos));
Py_INCREF(sep_obj);
PyTuple_SET_ITEM(out, 1, sep_obj);
pos += sep_len;
obj = PyString_FromStringAndSize(str + pos, len - pos);
PyTuple_SET_ITEM(out, 2, obj);
if (PyErr_Occurred()) {
Py_DECREF(out);
return NULL;
}
}
return out;
return partition((PyObject*)self, str, str_len, sep_obj, sep, sep_len);
}
Py_LOCAL(PyObject *)

63
Objects/unicodeobject.c
View File

@ -3856,7 +3856,13 @@ int PyUnicode_EncodeDecimal(Py_UNICODE *s,
#define STRINGLIB_CHAR Py_UNICODE
#define STRINGLIB_NEW PyUnicode_FromUnicode
#define STRINGLIB_EMPTY unicode_empty
#include "stringlib/fastsearch.h"
#include "stringlib/partition.h"
Py_LOCAL(Py_ssize_t) count(PyUnicodeObject *self,
Py_ssize_t start,
@ -6197,59 +6203,26 @@ PyUnicode_Partition(PyObject *str_in, PyObject *sep_in)
{
PyObject* str_obj;
PyObject* sep_obj;
Py_UNICODE *str, *sep;
Py_ssize_t len, sep_len, pos;
PyObject* out;
str_obj = PyUnicode_FromObject(str_in);
if (!str_obj)
return NULL;
sep_obj = PyUnicode_FromObject(sep_in);
if (!sep_obj)
goto error;
str = PyUnicode_AS_UNICODE(str_obj);
len = PyUnicode_GET_SIZE(str_obj);
sep = PyUnicode_AS_UNICODE(sep_obj);
sep_len = PyUnicode_GET_SIZE(sep_obj);
if (sep_len == 0) {
PyErr_SetString(PyExc_ValueError, "empty separator");
goto error;
}
out = PyTuple_New(3);
if (!out)
goto error;
pos = fastsearch(str, len, sep, sep_len, FAST_SEARCH);
if (pos < 0) {
Py_INCREF(str_obj);
PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
Py_INCREF(unicode_empty);
PyTuple_SET_ITEM(out, 1, (PyObject*) unicode_empty);
Py_INCREF(unicode_empty);
PyTuple_SET_ITEM(out, 2, (PyObject*) unicode_empty);
} else {
PyObject* obj;
PyTuple_SET_ITEM(out, 0, PyUnicode_FromUnicode(str, pos));
Py_INCREF(sep_obj);
PyTuple_SET_ITEM(out, 1, sep_obj);
obj = PyUnicode_FromUnicode(str + sep_len + pos, len - sep_len - pos);
PyTuple_SET_ITEM(out, 2, obj);
if (PyErr_Occurred()) {
Py_DECREF(out);
goto error;
}
}
return out;
error:
Py_XDECREF(sep_obj);
if (!sep_obj) {
Py_DECREF(str_obj);
return NULL;
}
out = partition(
str_obj, PyUnicode_AS_UNICODE(str_obj), PyUnicode_GET_SIZE(str_obj),
sep_obj, PyUnicode_AS_UNICODE(sep_obj), PyUnicode_GET_SIZE(sep_obj)
);
Py_DECREF(sep_obj);
Py_DECREF(str_obj);
return out;
}
PyDoc_STRVAR(partition__doc__,